Using the device SMP439, 439-08
18
7.2 Battery charger modes
The device has three battery charger modes:
• Master mode with battery sensor connected
• Autonomous mode without a battery sensor connected
• Slave mode
In master mode with battery sensor connected, the values for voltage, current and
temperature are received from battery sensor (IBS). These values are used during the
whole charging cycle.
In autonomous mode without a battery sensor connected, the charging parameters
are set by using the battery type selector button (chapter “Selecting the battery
type” on page 18).
In slave mode, the SMP439 detects a master device via the LIN1/LIN2 connection
socket and follows the received values.
7.3 Selecting the battery type
In order to select the battery type, no accessories or additional appliances shall be
connected.
I
➤ Press the battery type selector button with step function softly (fig. 1 7, page 3
and fig. 2 7, page 4). SMP 439-08 type A2 is set to lead start battery by default.
✔ Each press steps through the battery types and signals with numbers of blinks on
the LED. If the device is powered up without a battery connected, the number of
short green blinks between long red blinks shows the selected battery type:
NOTE
For selecting the battery type, the following requirements are necessary:
• A battery is not connected to the device.
• The device is supplied with mains voltage.
Lead start battery
AGM battery
(default)
Power supply
Bulk charge 14.4 14.7 13.8
Float voltage 13.8 13.6 13.8
LED blinking 1x green
1x red
2x green
1x red
3x green
1x red
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